Vehicle-wheel



c. A. MABIEN. VEHICLE WHEEL.

APPLICATION man SEPT- 13. 19:8. 1,331,575.

Patented Feb. 24, 1920 A 7' TORNE Y.

UNITED STATES PATENT OFFICE.

CHARLES A. MARIEN, OF ST. LOUIS, MISSOURI.

VEHICLE-WHEEL.

Application filed September 13, 1918.

To all whamit may concern:

Be it known that I, CHARLES A. Mxmex, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful improvements in vehiclc ll'heels. of which the following is a full, clear, aml exact description. reference being had to the accompanying drawings, forming a part hereof.

'The present invention is directed to improvements in vehicle-wheels. having for its object to provide. the ordinary wheel with extension treads disposed on either side of the main tire (whether solid or pneumatic) for thepur )ofse of atfording additional or a more extended support for the wheel cspe ciillly in cases where the load carried by the vehicle is sufficient to cause the main tire of the wheel to sink into soft or marshy country roads over which the vehicle may be run after leaving the usual hard and paved streetsof the city. This extension or emer- 'gency tread also comes into play on city streets when nsed to supplement the ordinary pneumatic tire which may collapse while in service, the extended trend thereby dispensing temporarily at least with the necessity of .rel'uoviug the collapsed tire and inflating and'plucing on a new tire. the cmergencv tread hcing snllii-ieut to permit the vehicle to continue on its journey without further attention until the machine is returned to its garage when a new pneumatic tire may he fitted to the wheel. In the present embodiment of my invention the extension tread may he made. in sections which are. radially adjustable so that the peripheries of the sections may be moved into coincidence with the periphery of the tread of the main tire thereby permitting' the wheel to he supportedsiu'uiltaneously by the main tire-and the extension tread. an arrangement which is taken advantage of in the event of abnormal loads being imposed on the vehicle. l'he advantages of the invention will he fully apparent from the following detailed description in connection with the accompanying drawings in which Figure 1 represents an edge view. partly in section. of a truck wheel showing one form of the invention applied thereto; Fig. 2 is a side elevation of one-half of the wheel showing the extension tread sect ions in their contracted position: Fig. 3 is an enlarged cross-section on the line 3-3 of Fig. 2 with the anti-skid chain attached; and Fig. l is a Patented Feb.

Serial No. 253,902.

view similar to Fig. 2 showing the tread sections i n.their expanded position.

Referring to the (lItHVIIIFS, 1, represents the telly. 2. the telly-ham. and 3, a conventional form of solid tire as used on truck wheels. Bolted to each side of the felly are a series of circular angle-segments 4 provided on either side of a central radial line r (Fig. 4) with slots x elongated in a direction parallel to said line. the radially dis posed leg of the segment in which the slots are formed being provided with extension lobes or eals 5 to accommodate the slots. The slots of a segment on one side of the wheel are in transverse alinement with the slots on the opposite side, a single bolt 6 througheaeh pair of slots serving to secure the segments to the fellyi. In Fig. 2 of thew drawings-the segments 4 occupy their inner or contractech-position brin mg" the. tread ribs or spurs t disposed on t ieperiphery of the leg of the segment forming the extension tread. insideithe tread or periphery of i the tire 3 and thus clearing the ground over which the wheel passes if it he hard enou h to sustain the load without causing the wheels to sink into it. .In cities where the roads are usually mved or rolled hard to sustain heavy l0! s. the extension "treads would not be called into requisition when in their contracted position '(Fig. 1) but should the vehicle ieavily loaded be driven from the city into the countrymnd the country roads he too soft to sustain the load without permitting the tire 3 to sink into the soft mud. the moment the tire had sunk to brin the tread spurs f in contact with the groan the weight on the wheel would then he sup ported both by the tire 3 and the tread extensions composed of the segments 4. thus insuring a wide or extended support for the wheel and its load. As well understood in the art the purpose of the tread formations such as 1 is to insure a grip on the ground passed over, and. where passing over a. hard or slippery surface, .to prevent skidding. The spurs I for example may be made to serve in the latter capacityby moving the segments 4 radially outward and securing them in position when the spurs have been brought into coincidence with the tread wriphcry of the tire 3 as shown in Fig. 4. in which position the extension treads would likewise he available for operating on soft roads as clearly olivitpis from the drawing. The parts are usuallyset to the position shown in Fig. 4 where the truck or vehicle is run indiscriminately or alternately over hard and soft roads, or over icy roads (the spurs t preventing skidding), or where it is desired to relieve the load on the rubber tire 3. Where the tire 3 is alone used as the tread member as shown in Figs. 2 and 3, in order to prevent skidding I dispose across the tire a series of anti-skid chains 7 the same being fastened at one end to an eyehook 8 the shank of which is passed through an opening a formed in the tread extension member on one side, the opposite end of the chain being secured to an eyebolt 9 the shank of which is passed through an opening a in the tread extension member on the opposite side.

Haring described my invention what I claim is: l a l. 1n combination with a vehicle wheel, a series of annular segments disconnected from one anotherseemed to the sides of the wheel and collectivelyforming supplemental treads for the'wheel, each segment being rovided on either side of a central radial ine fromltheaxislof the wheel with elongeted slotsiparallel'to said line, devices on Tthe wheel't"'ifersing the slots of opposing segments to per the segments, an

securing the segments sitions.

2. In com provided with a felly, a series of circular angl forming an angle rin site sides of the folly, the fully be al radia lon ated engaging side of aeentr of the wheel w ith e said line, a slot of one of the leg op .passed throu alinin justal (r slots, the sever ilze radially to and of the wheel. the outwart of the several segments 0 a 'supplena-ntal or emu-gen wheel. r

In testinu in presence of two wit (H ARLES Witnesses:

'EMIL Sumac,

A. lil es-1; en.

mit of 'fi adial adiustment of id devices for ir adjusted pod means on bination with a vehicle wheel tire on the telly, a e segments collectively secured to the oppothe leg of the se dcd on either mm the. axis slots parallel to cg alining with a )OSllQ thereto, a secur h the telly and al segmen in" provi ts being a l from the periphery lly projecting legs ectively forming "trend for the my whereof I it 

